Java Utililty Methods Path File List nio

List of utility methods to do Path File List nio

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Description

The list of methods to do Path File List nio are organized into topic(s).

Method

voidaddNonEmptyLinesFromFile(final ArrayList result, final String path)
add Non Empty Lines From File 
final List<String> lines = Files.readAllLines(Paths.get(path), StandardCharsets.UTF_8);
lines.stream().filter(s -> s.length() > 0).forEach(result::add);
PathMatcheranyPathMatcher(final ImmutableList pathMatchers)
A PathMatcher that returns true if any of the delegate pathMatchers returns true. 
return new PathMatcher() {
    @Override
    public boolean matches(Path path) {
        for (PathMatcher pathMatcher : pathMatchers) {
            if (pathMatcher.matches(path)) {
                return true;
        return false;
    @Override
    public String toString() {
        return "anyOf[" + Joiner.on(", ").join(pathMatchers) + "]";
};
voidarchive(Path archive, List targetFiles)
Archives a list of target files into a ZIP archive 
byte[] buffer = new byte[bufferSize];
try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(archive.toFile()))) {
    for (Path file : targetFiles) {
        ZipEntry ze = new ZipEntry(file.getFileName().toString());
        zos.putNextEntry(ze);
        try (FileInputStream in = new FileInputStream(file.toFile())) {
            int len;
            while ((len = in.read(buffer)) > 0) {
...
ListasFileList(Object... paths)
as File List 
List<File> files = new ArrayList<File>(paths.length);
for (Object it : paths) {
    if (it instanceof CharSequence) {
        files.add(new File(it.toString()));
    } else if (it instanceof File) {
        files.add((File) it);
    } else if (it instanceof Path) {
        files.add(((Path) it).toFile());
...
ListasPathsList(final File[] files)
Convert an array of java.io.File to a List of java.nio.file.Path 
return Optional.ofNullable(files)
        .map(fs -> Arrays.stream(fs).map(File::toPath).collect(Collectors.toList()))
        .orElse(Collections.EMPTY_LIST);
booleancompileTreeWithErrors(JavaCompiler compiler, List options, File targetFolder, DiagnosticListener diagnosticListener, boolean addProcessorsToClasspath)
compile Tree With Errors 
return compileTreeWithErrors(compiler, options, targetFolder, diagnosticListener, false,
        addProcessorsToClasspath);
SetdeepListChildren(Path directory)
deep List Children 
return deepListChildren(directory, DEFAULT_GLOB);
ArrayListfileListDeep(Path dir)
file List Deep 
try {
    if (Files.exists(dir)) {
        Stream<Path> ds = Files.walk(dir);
        ArrayList<Path> dirList = new ArrayList<Path>();
        Iterator<Path> it = ds.iterator();
        while (it.hasNext()) {
            Path tp = it.next();
            if (!Files.isDirectory(tp)) {
...
PathfindExpectedResultForTestcase(final Path testcase, final LinkedList expectedResults)
find Expected Result For Testcase 
final String fileName = getFileName(testcase);
final Iterator<Path> it = expectedResults.iterator();
while (it.hasNext()) {
    final Path result = it.next();
    if (fileName.equalsIgnoreCase(getFileName(result))) {
        it.remove();
        return result;
return null;
ClassLoadergetClassLoaderFromPaths(ArrayList paths)
get Class Loader From Paths 
ArrayList<URL> urls = new ArrayList<URL>();
for (Path p : paths) {
    try {
        URL url = p.toUri().toURL();
        urls.add(url);
    } catch (MalformedURLException e) {
        e.printStackTrace();
URL[] urlsArray = new URL[urls.size()];
urlsArray = urls.toArray(urlsArray); 
ClassLoader cl = new URLClassLoader(urlsArray);
return cl;